Keratin Treatment: What It Is and How to Prepare
A keratin treatment is a hair-smoothing service that reduces frizz, adds shine, and makes hair more manageable. It works by infusing keratin—a natural protein found in hair—into the hair shaft, filling in gaps and smoothing the cuticle. The result is softer, straighter hair that lasts for weeks.
There are different types of keratin treatments, ranging from gentle formulas that preserve some natural texture to stronger treatments that provide near-straight results. Your stylist can help you choose the best option based on your hair type and desired look.
A complete keratin treatment guide covering preparation, aftercare, and expected results. Learn how to maintain smooth, frizz-free hair for weeks and whether this treatment suits your hair type.
How Keratin Treatments Work
- Cleansing – A clarifying shampoo removes buildup so the keratin can penetrate deeply.
- Application – The keratin solution is applied section by section, coating each strand.
- Heat Activation – A flat iron seals the keratin into the hair, locking in smoothness.
- Setting Period – After the treatment, you must avoid washing your hair for a few days to let the keratin fully bond.
The effects typically last 4 to 6 weeks, depending on hair type, aftercare, and how often you wash your hair.
How to Prepare for Your Keratin Treatment
Avoid Harsh Chemicals
In the two weeks before your treatment, skip hair dyes, relaxers, or other chemical processes. These can weaken your hair and interfere with the keratin’s ability to bond.
Clarify Your Hair
Use a deep-cleansing shampoo to strip away oils, silicones, and product buildup. Clean hair allows the keratin to absorb evenly, leading to better results.
Limit Washing
Avoid shampooing for at least 24 hours before your appointment. Natural oils help protect your scalp during the treatment.
Skip Heavy Products
Don’t use conditioners, oils, or styling creams before your session. These can leave residue that blocks the keratin.
Following these steps ensures the best outcome. If you have questions, discuss them with your stylist before starting.
Aftercare for Long-Lasting Results
Wait to Wash
Keep your hair dry for at least 72 hours (3 days) after the treatment. Washing too soon can weaken the keratin’s hold.
Use Sulfate-Free Shampoo
Sulfates strip away keratin, shortening the treatment’s lifespan. Choose gentle, sulfate-free formulas instead.
Moisturize Regularly
Hydrating shampoos, conditioners, and masks help maintain smoothness and prevent dryness.
Avoid Chlorine & Saltwater
Pools and ocean water can break down keratin. If you swim, wear a cap or rinse hair immediately after.
Choose Gentle Hair Ties
Opt for silk scrunchies or fabric ties to avoid creases and breakage.
Air Dry When Possible
Blow-drying and rough towel-drying can cause frizz. Let hair dry naturally or use a microfiber towel.
Who Benefits from a Keratin Treatment?
- Frizzy or Curly Hair – Tames unruly texture without fully straightening.
- Damaged Hair – Helps repair weak, porous strands by reinforcing them with protein.
- Busy Lifestyles – Reduces styling time since hair air-dries smoother.
Potential Drawbacks
- Temporary Results – Unlike permanent straightening, effects fade over time.
- Formaldehyde Concerns – Some treatments contain trace amounts; ask your stylist for a formaldehyde-free option if preferred.
- Cost & Maintenance – Requires salon visits and specific aftercare products.
Final Tips
- Consult Your Stylist – They can adjust the treatment’s strength based on your hair’s needs.
- Patch Test First – If you have sensitive skin, request a test to check for reactions.
- Schedule Wisely – Plan your treatment when you won’t need to wash or style heavily for a few days.
A keratin treatment strengthens hair by replenishing lost protein, helping to repair damage from heat, coloring, and environmental stress. It smooths the hair cuticle to reduce frizz and boost shine while making styling easier with less heat exposure. The treatment also creates a protective barrier that helps prevent future breakage and keeps hair hydrated longer.
With proper prep and aftercare, a keratin treatment can give you sleek, healthy-looking hair for weeks. Talk to your stylist to see if it’s right for you.